1540 W, 5000 rpm — torque and speed profile for dynamic positioning
The MH30703P07A2200 is a 1540 W continuous-power servo motor from the Lexium MH3 series, delivering 3.18 N.m nominal torque at 5000 rpm when paired with an LXM52 drive at 115 V three-phase input. At 480 V three-phase the nominal torque drops to 2.26 N.m — the drive supply voltage directly sets the available torque, so the BOM must match the drive and motor voltage ratings together. Peak stall torque reaches 10.2 N.m across the 115–480 V three-phase range, giving a 3:1 torque overload margin for acceleration moves. The continuous stall torque is 3.4 N.m — this is the holding torque at zero speed, which matters for vertical-axis applications where the motor must hold the load at standstill without a brake. The motor uses natural convection cooling — no fan, so it runs silently but derates if mounted in a confined space without airflow. The 70 mm IEC flange and smooth shaft (14 mm diameter, 30 mm length) mean the coupling method is a clamping hub or collet, not a keyed fit.
Encoder feedback and electrical interface — absolute position without a home cycle
The Multiturn SinCos Hiperface encoder provides absolute position feedback over multiple shaft revolutions — the drive knows the rotor position at power-up without a homing sequence. This saves cycle time on machines that power-cycle between production runs. Electrical connection uses rotatable right-angled connectors, letting the cable exit direction be adjusted in 90° increments to fit tight cabinet layouts. The IP65 rating means the motor body and connector interface withstand washdown — suitable for food-and-bev lines or wet machining environments without an additional enclosure. Stator resistance is 2.65 Ohm and inductance is 8.64 mH — these set the electrical time constant and influence the drive's current-loop tuning. The back EMF constant of 55 V/krpm means at 5000 rpm the motor generates 275 V line-to-line, which must stay below the drive's DC bus voltage for proper current regulation.
Current limits and thermal protection — peak vs continuous duty
Continuous stall current is 3.91 A; the 3-second peak current is 12.57 A — a 3.2× overload factor. The drive must be sized to supply this peak current for acceleration and deceleration without tripping on overcurrent. Copper hot temperature is rated at 135 °C, so the motor can sustain the peak current for the 3-second window without exceeding the winding insulation class. Maximum mechanical speed is 8000 rpm — 60% overspeed above nominal. The radial force limits drop from 730 N at 1000 rpm to 400 N at 6000 rpm; a belt-driven load at high speed must be checked against this derating curve to avoid bearing overload. The torque constant is 0.87 N.m/A at 120 °C — the actual torque per amp decreases as the motor heats up. Drive current limits should be set with the hot torque constant, not the cold value, to guarantee the rated torque at thermal equilibrium.
For a critical spare, ordering one to keep in the cabinet before the line needs it avoids the scramble when a motor fails mid-shift.